Screen or window lock.



1.1. THOMAS 6L L. L. VAUGHAN. SCREEN 0R W\NDOW LOCK. APPLICATlON FILED IAN.27. \911.

Patented Feb. 19, 1918'.

entree i .sra'rns earner @EFTQE.

JAMES J. THOMAS AND LILLIAN L. VAUGHAN, OF RALEIGH, NORTH CAROLINA.

SCREEN R WINDOW LOCK.

Application filed January 27,

To all whom it may concern:

Be it known that we, JAMES J. THOMAS and LILLIAN L. VAUGHAN, are citizens of the United States, residing at Raleigh, in the county of lVake and State of North Carolina, have invented certain new and useful Improvements in Screen or Window Locks; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a lock and has for one of its objects the provision of a device of this character especially adapted for use in locking two parts together, such as a window sash to a window frame or a screen to a window frame and which will prevent any undue movement of the parts locked together, thereby obviating raveling of window sashes or screens.

Another object of this invention is to provide a keeper secured to the window frame or permanent object and adapted to receive an eccentric catch carried by the movable part such as the window sash or screen, whereby the which catch can not be operated by a knife blade or similar tool.

A further ob ect of this invention is to provide a casing secured to the movable object in which the catch is journaled and has a spring secured therein adapted to bear against the catch at cidental movement of the catch either in an active or inactive position.

A still further object of this invention is the provision of a screen or window lock of the above stated character, which shall be simple, durable and efficient, and which may be manufactured and sold at a comparatively low cost.

With these and other objects in view as will become more apparent as the description proceeds, the invention consists of certain novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and claimed.

F or a completeunderstanding of my invention, reference is to be had to the following description and accompanying drawing, in which:

Figure 1 is a vertical sectional view illustrating the application of our lock to a permanent and movable ob ect.

parts are locked together and all times to prevent ac- V 1917. Serial N0.'14-4,851.

Fig. 2 is a sectional View of the same taken on the line2-2 of Fig. 1.

F g. 3 18 a plan view of the keeper, and Fig. 4 1s a perspective view of the key;

Fig. 5 is a fragmentary front elevation of sash, illustrating our a window frame and invention applied thereto.

Fig. 6 is a detail sectional view illustrating the metal ferrule.

Referring in detail to the drawing, the numeral 1 indicates a stationary object such as a window frame or the like and the nu meral 2 indicates a movable object, such as a window sash, screen or a door, which parts have our improved lock applied thereto.

The permanent object 1 is provided with a recess 3 for 4, which has formed on each end thereof, extensions 5, which are apertured to receive screws or like fasteners 6 for securing the extensions to the permanent object 1. The cup-shaped keeper 4 has its side walls connected by a bar 7 adapted to be engaged by an eccentric catch 8.

The movable object 2 is provided with a recess in which is positioned a casing 9, hav ing a movable cover 10. The movable cover 10 and the rear wall of the casing 9 is provided with alining apertures to receive a hub 11 having a squared opening or aperture l2. Formed upon the hub 11 is a right angled enlargement 13 on which an arcuate extension 14 is formed, which forms the eccentric catch 8.

A leaf spring 15 is secured to the top wall of the casing and upon the interior thereof as illustrated at 16. The leaf spring 15 is bent rearwardly upon itself as illustrated at 17 and has its free end bearing upon the ec centric catch 8 to hold said eccentric catch 8 against accidental movement,

A key 18 has one end twisted to form a finger grip l9 and has secured to its opposite end a squared lug 20 which is adapted to be inserted within the squared opening 12 of the hub 11 for rotating the eccentric catch 8 causing said eccentric catch 8 to move into the keeper 4 under the bar 7, locking the stationary and movable parts together. As the eccentric catch 8 is moved into the keeper the free end of the leaf spring l5 moves downwardly with the eccentric catch and prevents the eccentric catch from being accidentally moved from within the keeper 4.

From the foregoing description taken in connection with the accompanying drawing,

Patented Feb.19, 191s.

receiving a cup-shaped keeper V necessary to operate hiding fferrule 21'may be applied to the front face of the window sash18 for permitting the I the eccentric catch.

A plurality of keepersQQ within the Window frame Copies '0:

the keylto be inserted Within for rotating the same into and out of engagement with the" keeper.

may

19 whereby the. Window sash 18 may be locked'at various positions or. in openedor closed position.

lug 20' upon While 'WG have shown andfclescribed the preferred embodiment of our invention, it

Will be understood that minorfchanges in construction, combination and'arrangement of parts may be made ithout departing this patent may lw ontainerl for giWhat is claimedisi t ina the eccentric catch by A metal i from and scope of the invention as claimed.

A look comprislng a end Wall open, a keeper open end of the casing,

having one associated with. the a hub journaled in the casingand having a squared openingto':

receive a key Y a 'rightzangledenlargement 'formed on said'hub, an'arcuate shaped ex- 7 said enlargement a di adaptedto be moved out ofthe open end tension formed on;

of the casing into engagement with the;

keeper, anda springsecured to said. casing 7 40 the extension when and normally engaging w thin said casing and V the right angled enlargement When said tension is moved into engagement with the keeper to prevent the 8Xt811SlQ11 f1Onl becoming disengaged from the keeper,

In. testimony whereof We afiix our sign-v tures in presencerof, tWo Witnesses. A

7 JAMES J. THOMAS. LILLIAN' Witnesses: n

C. A; Gosnmgf j A. T. SHAW.

five cents each, byaddressing the Commissi oner of Patents, Washingto yLG. i i

adapted to engage L.- vA eH n 

